Unlocking rooftop solar PV in Thailand: Facilitating policy and financial de-risking instruments

Thailand has huge rooftop solar potential that could offer both benefits of diversifying the country's renewable energy sources and enabling distributed generation at the consumer level through behind-the-metre installations.Despite a surge of rooftop solar PV installations in 2023, driven by high electricity prices, the current adoption rate of rooftop solar PV systems inThailand is still much lower than its vast potential. This gap is due to several policy, regulatory and financial risk barriers. This study systematically identifies the risks associated with rooftop solar PV investment in Thailand  and quantifies these risks’ impacts on financial costs (i.e., the cost of equity and the cost of debt). In addition, the study highlights suggested policy and financial de-risking instruments that can support rooftop solar PV deployment in Thailand.